EP 0852578 B1 20000906 - METHOD FOR PREPARING CERTAIN ACETONITRILES
Title (en)
METHOD FOR PREPARING CERTAIN ACETONITRILES
Title (de)
VERFAHREN ZUR HERSTELLUNG BESTIMMTER ACETONITRILEN
Title (fr)
PROCEDE DE PREPARATION DE CERTAINS ACETONITRILES
Publication
Application
Priority
- GB 9509930 A 19950517
- US 9607108 W 19960516
Abstract (en)
[origin: WO9636594A1] The invention relates to a process for converting a benzaldehyde to a cyanohydrin in an aqueous medium by adding an alkali metal bisulfite to a solution of the benzaldehyde, then adding an alkali metal cyanide to this mixture, followed by a second charge of alkali metal bisulfite. The reaction is conducted at a pH between 6.5 to 7.5 and a temperature of 0 to 30 degrees centigrade.
IPC 1-7
IPC 8 full level
C07B 61/00 (2006.01); C07C 253/08 (2006.01); C07C 255/36 (2006.01); C07C 255/37 (2006.01)
CPC (source: EP US)
C07C 253/00 (2013.01 - EP US); C07C 255/36 (2013.01 - EP US)
C-Set (source: EP US)
Designated contracting state (EPC)
BE CH DE DK ES FR GB IT LI NL
DOCDB simple family (publication)
WO 9636594 A1 19961121; DE 69610213 D1 20001012; DE 69610213 T2 20010104; DK 0852578 T3 20001211; EP 0852578 A1 19980715; EP 0852578 A4 19980715; EP 0852578 B1 20000906; ES 2149479 T3 20001101; GB 9509930 D0 19950712; JP H11505256 A 19990518; US 6040471 A 20000321; US 6225491 B1 20010501
DOCDB simple family (application)
US 9607108 W 19960516; DE 69610213 T 19960516; DK 96915869 T 19960516; EP 96915869 A 19960516; ES 96915869 T 19960516; GB 9509930 A 19950517; JP 53506896 A 19960516; US 17326898 A 19981015; US 46715799 A 19991220